77210138 divided by 786 
Let's see how many times 786 fits into 77210138.

Advancing to step 1:
786 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 786

Advancing to step 2:
786 can be fit into 77 0 times, resulting in a remainder of 77.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Bring next digit (2) of the dividend behind the 77 and repeat the process: 772 / 786

Advancing to step 3:
If we divide 772 by 786, we get 0 and a remainder of 772.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 772, we get 772.
Include the next digit (1) from the dividend after 772, then repeat: 7721 / 786

On to step 4:
If we divide 7721 by 786, we get 9 and a remainder of 647.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we take 7074 away from 7721, we end up with 647.
Bring next digit (0) of the dividend behind the 647 and repeat the process: 6470 / 786

Moving on to step 5:
786 can be fit into 6470 8 times, resulting in a remainder of 182.
Record the quotient 8 as the next digit in the result. 
Result so far: 98.0
If we subtract 6288 from 6470, we get 182.
Fetch the next digit (1) from the dividend, attach it to 182 and continue: 1821 / 786

On to step 6:
786 goes into 1821 2 times with a remainder of 249.
The next digit of our result is 2. 
Result so far: 982.0
If we take 1572 away from 1821, we end up with 249.
Bring next digit (3) of the dividend behind the 249 and repeat the process: 2493 / 786

Let's proceed to step 7:
When dividing 2493 by 786, we get 3 with a remainder of 135.
Use 3 as the next digit of our solution. 
Result so far: 9823.0
The remainder is 135 after subtracting 2358 from 2493.
Append the next digit (8) from the dividend to 135 and continue with: 1358 / 786

Advancing to step 8:
786 can be fit into 1358 1 times, resulting in a remainder of 572.
Write down 1 as next digit of the result. 
Result so far: 98231.0
Subtracting 786 from 1358 leaves us with 572.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5720, and continue the process.

Let's proceed to step 9:
5720 divided by 786 is 7 with a remainder of 218.
Use 7 as the next digit of our solution. 
Result so far: 98231.7
If we take 5502 away from 5720, we end up with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Step 10:
786 can be fit into 2180 2 times, resulting in a remainder of 608.
Put 2 as the next digit of the answer. 
Result so far: 98231.72
Deduct 1572 from 2180 and we're left with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Advancing to step 11:
786 goes into 6080 7 times with a remainder of 578.
Put 7 as the next digit of the answer. 
Result so far: 98231.727
If we take 5502 away from 6080, we end up with 578.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5780, and continue the process.

Let's proceed to step 12:
786 can be fit into 5780 7 times, resulting in a remainder of 278.
Record the quotient 7 as the next digit in the result. 
Result so far: 98231.7277
If we take 5502 away from 5780, we end up with 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

The final result is 98231.7277 with a remainder of 0.00278.